有机次膦酸盐复配型阻燃剂阻燃LGFPA6的制备.pdf

第42卷,第4期
工程塑料
Vol 42. No4
2014年4月
ENGINEERING PLASTICS APPLICATION
Apr.2014
doi:10.3969/issn.1001-3539.2014.04.022
有机次螣酸盐复配型阻燃剂阻燃 LGEPA6的制备
祝焕2,何文涛2,于杰2,秦舒浩2
(1.贵州大学材料与治金学院,贵阳55025;2.国家复合材料改性聚合物材料工程技术研究中心,贵阳55014)
摘要:来用新型有机次膦酸盐复配型阻燃剂制备无鹵阻燃长玻纤增强尼龙6( LGFPAI6)复合材料。通过垂直然
浇(UL94)、极服氧指数(LO)、热重(TG)分析、差示担描量热(DSC)仪及力学性能测试系统研究了阻燃剂含量对
LGFPA6复合材料性能的影响。结果表明,阻燃剂质量分数为15%时,可使阻燃 LGFPA6复合材料的阻燃等级达
到UL94V-0级,LOI为28.0%,力学性能最佳。TG分析表明,胆燃剂降低了 LGFPA6的热稳定性,促进基体成炭。
DSC结果表明,阻燃剂质量分数为15%时,对 LGFPA6的结晶性能影响最小。阻燃剤质量分数为15%时,复合材料
的综合性能最好。
关键词:长玻纤增强尼龙6;阻燃性能;热性能;力学性能;结晶性能
中图分类号:TQ327.1文献标识码:A文章编号:1001-3539(2014)04-0095-05
Preparation of Long Glass-fiber Reinforced Polyamide 6 with Novel Organoph-osphinate Complexes as
Flame Retardant
Zhu Huan", He Wentao, Yu Jie", Qin Shuhao
(1. College of Materials Scicnce and Metallugry Engineering, Guizhou University, Guiyang 550025, China; National Engineering Research
Center for Compounding and Modification of Polymeric Materials, Guiyang 550014, China)
Abstract: Halogenic-free flame retarded long glass-fiber polyamide 6 composites were prepared with novel organopl
h
osphinates complexes as flame retardant. The properties of the flame retarded LGFPA6 were studied by UL 94 vertical burning
tests, limite oxygen index tests(LO) thermogravimetric(TG )analysis, differential scanning calorimeter(DS C)and mechnical
measurements. The results show that V-0 rating was reached in UL94 vertical burning test and LOI is increased to 28% when the
mass fraction of flame retardant is 15%. Morever, remarkable improvements in mechanical properties are also achieved. The results
of TG indicates that the thermal stability of the flame retarded LGFPA6 composites are reduced compared to LGFPA6 and flame
retardant promotes matrix charing. The DSC suggestes that the minimal effect on the crystallization of LGFPA6 is maintained whe
mass fraction of the flame retardant is 15%. When the mass fraction of flame retardant is 15%, the best comprehensive performance
is obtained
Keywords: long glass fiber reinforced polyamide 6; flame retardant; thermal property; mechanical property; crystal
property
在长玻纤增强尼龙6( LGFPA6)复合材料中,由但由于存在安全和环保问题,国际范围内已经限制
于[GF的引入可大大提高其力学性能、耐疲劳性、或禁止了一些卤系阻燃剂的使用,因此开发元卤阻
耐磨性、耐热性和耐蠕变性等,被广泛应用于电子燃 LGFPA6产品,实现 LGEPA6无卤化和安全性阻
电气、汽车运输、航空航天等领域,故自20世纪70燃成为今后 LGFPAU6材料的趋势及研究方向。
年代开发以来,其应用越来越受到重视。但是由于
基于有机次膦酸盐膨胀型阻燃剂是近年来新
玻纤的“烛心效应”,使得工GFPA6极易燃烧,且燃开发的无卤环保、高效阻燃剂,克服了常用磷氮膨胀
烧火焰大,不自熄,LGF质量分数为25%时,极限阻燃剂的热稳定性差、与聚合物相容差的缺点,其热
氧指数(Oの仅为21.6%,达到UL94垂直燃烧测
试的HB级叫,因此对阻燃要求严格的场合,提高
贵州省科学技术项目(20134005),国家科技支撑计刘项目
(2013BABO7B03),贵州省科技计划项目(20116023)
LGFPA6复合材料的阻燃性能,成为首要解决的问
联系人:何文涛,博士,主要研究方向为无机纳米粒子的表面修
题。阻燃GF增强PA( RPGFPA)的研究起源于20饰及其在聚合物中的应用
世纪70年代,采用的阻燃剂主要是卤系阻燃剂,
收稿日期:2014-01-15